Your body-mass index ("BMI") measures your height/weight ratio.

People with BMIs between 19 and 22 live longest. Death rates are noticeably higher for people with indexes 25 and above. (5/1/2001: The U.S. government recently changed these ranges to a minimum of 20 and a maximum of 24. We encourage you to take these numbers with a grain of salt; they are not as accurate as they sound.)

Enter your height (in feet and inches) and weight (in pounds) in the boxes below, and then click "calculate". These are converted to metric values to figure your BMI.

Note: your browser must support Javascript, or this will not work.
Also note: if you are exactly 5 feet or 6 feet tall, put a 0 in the inches box. The result is "infinity" if you leave the inches box empty.